Keystones — Lintel
Five GCSE retrieval questions · 10 November 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
1900000
Answer: 1.9 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 12
Answer: (x + 6)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 16cm, angle = 38°. Find adjacent side
Answer: 12.6cm -
4. Ratio Mixed ratio problems
In ratio 2:4:1, what fraction is the second part?
Answer: 4⁄7 -
5. Statistics Mean
Calculate the mean of: 33, 15, 5, 34, 25, 33, 14
Answer: 22.7